Shareholders' Equity (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) Plan $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense | $	$ 440,000		$ 951,000
Mr. Lewis C. Pell [Member]
Stock Warrants-Related Party [Abstract]
Warrants issued to purchase common stock (in shares) | shares	376,123
Warrants exercise price (in dollars per share)	$ 9.31
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense | $	$ 371,000
Unrecognized compensation expense, weighted average period of recognition	2 years 3 months
Weighted-average assumptions used to value the options granted [Abstract]
Expected life in years	3 years 10 months 24 days		3 years 10 months 2 days
Risk-free interest rate	0.98%		1.11%
Expected volatility	64.32%		63.94%
Expected dividend yield	0.00%		0.00%
Weighted-average grant date fair value (in dollars per share)	$ 0.49		$ 0.79
Stock options, number of shares [Roll Forward]
Outstanding, beginning of period (in shares) | shares	2,573,640
Options granted (in shares) | shares	692,400
Options exercised (in shares) | shares	0
Options surrendered (in shares) | shares	(1,566,135)
Outstanding, end of period (in shares) | shares	1,699,905	2,573,640
Exercisable, end of period (in shares) | shares	818,333
Stock options, weighted average exercise price [Roll Forward]
Outstanding, beginning of period (in dollars per share)	$ 4.44
Options granted (in dollars per share)	1.05
Options exercised (in dollars per share)	0
Options surrendered (in dollars per share)	3.90
Outstanding, end of period (in dollars per share)	3.54	$ 4.44
Exercisable, end of period (in dollars per share)	$ 6.03
Stock options, additional disclosures [Abstract]
Outstanding, weighted average remaining life in years	6 years 9 months 14 days	4 years 7 months 20 days
Options exercisable, Weighted average remaining life in years	3 years 11 months 12 days
Outstanding, aggregate intrinsic value | $	$ 578,213	$ 0
Exercisable, aggregate intrinsic value | $	16,062
Fair value of stock options vested | $	$ 268,000		$ 600,000
Stock Options [Member] | Executive Employees and Directors [Member]
Weighted-average assumptions used to value the options granted [Abstract]
Forfeiture rate	15.00%
Stock Options [Member] | Non-Executive Employees [Member]
Weighted-average assumptions used to value the options granted [Abstract]
Forfeiture rate	20.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share-based compensation expense | $	$ 907,000
Unrecognized compensation expense, weighted average period of recognition	1 year 6 months 14 days
Restricted shares and warrants, number of shares [Roll Forward]
Balance, beginning of period (in shares) | shares	686,910
Shares granted (in shares) | shares	837,858
Shares vested (in shares) | shares	(323,613)
Shares forfeited (in shares) | shares	(301,822)
Balance, end of period (in shares) | shares	899,333	686,910
Restricted shares, weighted average grant date fair value [Roll Forward]
Balance, beginning of period (in dollars per share)	$ 2.41
Shares granted (in dollars per share)	1.06
Shares vested (in dollars per share)	2.19
Shares forfeited (in dollars per share)	2.48
Balance, end of period (in dollars per share)	$ 1.21	$ 2.41
Restricted shares and warrants, additional disclosures [Abstract]
Weighted average remaining life in years, Balance	1 year 6 months 14 days	1 year 7 months 2 days
Aggregate intrinsic value, Balance | $	$ 1,636,786	$ 886,114
Performance Award [Member]
Long-Term Incentive Plan and Awards [Abstract]
First stock price target of common stock (in dollars per share)	$ 7.57
Second stock price target of common stock (in dollars per share)	10.32
Third stock price target of common stock (in dollars per share)	$ 13.76
Number of consecutive trading days	45 days
Award requisite service period	2 years 4 months 24 days
Recorded liability | $	$ 10,000
Recorded income | $	$ 57,000
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active plans for share-based compensation grants | Plan	1
Number of shares reserved for share-based grants (in shares) | shares	2,500,000
Shares remain available for grant (in shares) | shares	1,475,870
2015 Plan [Member] | Stock Options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of share-based payment award	7 years
Vesting period	3 years